12:60.14:2.5 比值 x:2.5=0.8 6.9:x=0.312:60.14:2.5 比值 x:2.5=0.8 6.9:x=0.3 5/6:x=3/2 未知项

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12:60.14:2.5比值x:2.5=0.86.9:x=0.312:60.14:2.5比值x:2.5=0.86.9:x=0.35/6:x=3/2未知项12:60.14:2.5比值x:2.5=0.86

12:60.14:2.5 比值 x:2.5=0.8 6.9:x=0.312:60.14:2.5 比值 x:2.5=0.8 6.9:x=0.3 5/6:x=3/2 未知项
12:60.14:2.5 比值 x:2.5=0.8 6.9:x=0.3
12:60.14:2.5 比值 x:2.5=0.8 6.9:x=0.3 5/6:x=3/2 未知项

12:60.14:2.5 比值 x:2.5=0.8 6.9:x=0.312:60.14:2.5 比值 x:2.5=0.8 6.9:x=0.3 5/6:x=3/2 未知项
x:2.5=0.8 x=2
6.9:x=0.3 x=23
5/6:x=3/2 x=5/9